EP2933516B1 - Système d'actionnement - Google Patents

Système d'actionnement Download PDF

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Publication number
EP2933516B1
EP2933516B1 EP15158927.2A EP15158927A EP2933516B1 EP 2933516 B1 EP2933516 B1 EP 2933516B1 EP 15158927 A EP15158927 A EP 15158927A EP 2933516 B1 EP2933516 B1 EP 2933516B1
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EP
European Patent Office
Prior art keywords
guide sleeve
clutch
retaining nut
actuating system
actuating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP15158927.2A
Other languages
German (de)
English (en)
Other versions
EP2933516A2 (fr
EP2933516A3 (fr
Inventor
Simon Ortmann
Rebekka Fischer
Timo Maisch
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Schaeffler Technologies AG and Co KG
Original Assignee
Schaeffler Technologies AG and Co KG
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Publication date
Application filed by Schaeffler Technologies AG and Co KG filed Critical Schaeffler Technologies AG and Co KG
Publication of EP2933516A2 publication Critical patent/EP2933516A2/fr
Publication of EP2933516A3 publication Critical patent/EP2933516A3/fr
Application granted granted Critical
Publication of EP2933516B1 publication Critical patent/EP2933516B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D25/00—Fluid-actuated clutches
    • F16D25/08—Fluid-actuated clutches with fluid-actuated member not rotating with a clutching member
    • F16D25/082—Fluid-actuated clutches with fluid-actuated member not rotating with a clutching member the line of action of the fluid-actuated members co-inciding with the axis of rotation
    • F16D25/083—Actuators therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D23/00—Details of mechanically-actuated clutches not specific for one distinct type
    • F16D23/12—Mechanical clutch-actuating mechanisms arranged outside the clutch as such
    • F16D23/14—Clutch-actuating sleeves or bearings; Actuating members directly connected to clutch-actuating sleeves or bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D23/00—Details of mechanically-actuated clutches not specific for one distinct type
    • F16D23/12—Mechanical clutch-actuating mechanisms arranged outside the clutch as such
    • F16D23/14—Clutch-actuating sleeves or bearings; Actuating members directly connected to clutch-actuating sleeves or bearings
    • F16D23/143—Arrangements or details for the connection between the release bearing and the diaphragm

Definitions

  • the invention relates to an actuation system, with the aid of which a clutch unit for coupling a drive shaft of a motor vehicle engine can be actuated with at least one transmission input shaft of a motor vehicle transmission.
  • the DE 60 2004 009 042 T2 discloses an actuation system for actuating a clutch assembly for coupling a drive shaft of an automotive engine with at least one transmission input shaft of a motor vehicle transmission.
  • a hydraulic actuation system for actuating a clutch assembly may include a cylinder in which a piston is guided. With an increase in the pressure in the cylinder, the piston can be extended out of the cylinder to move an actuating element, for example a lever spring designed in the manner of a disk spring, which can thereby displace a pressure plate relative to a counter plate. As a result, a clutch disc can be pressed in a frictional engagement between the counterpart plate and the pressure plate, as a result of which the clutch unit can transmit a torque of a drive shaft of an automobile engine to a transmission input shaft of a motor vehicle transmission.
  • the actuating force occurring during actuation of the clutch unit must be supported in the axial direction.
  • the actuating system can be screwed to a transmission housing of the motor vehicle transmission, whereby, however, the assembly of the clutch unit is difficult.
  • an actuating system for actuating a clutch unit for coupling a drive shaft of a motor vehicle engine with at least one transmission input shaft of a motor vehicle transmission is provided with a slave cylinder for introducing an actuating force, a guide sleeve for supporting the slave cylinder and on a coupling part, in particular clutch cover, supported cap bearing for mounting the coupling part on the guide sleeve, wherein the cover bearing is mounted on the guide sleeve, wherein the guide sleeve has an external thread on a Weg flodem of the slave cylinder end portion and a retaining nut is screwed onto the external thread, and wherein the cover bearing between the retaining nut and the coupling part in the axial direction captive, especially free of play, recorded.
  • the cover bearing provided between the retaining nut and the coupling part, it is possible to support the slave cylinder on the coupling part, so that it is not necessary to support the actuation system on a transmission housing of a motor vehicle transmission.
  • the assembly of a clutch assembly with such an actuating system is simplified.
  • the power flow for supporting the slave cylinder can in this case run from the slave cylinder via the guide sleeve, the retaining nut bolted to the guide sleeve and the cover bearing supported on the retaining nut.
  • the cover bearing can be supported directly or indirectly, for example via a clamped with the top bearing and the coupling part retaining ring on the coupling part.
  • a piston can be guided in the slave cylinder, which can be extended at a pressure increasing in the slave cylinder, to move an actuating element, for example a lever spring designed in the manner of a disk spring, which thereby displaces a pressure plate relative to a counter plate of a friction clutch can.
  • the actuator can be supported directly or indirectly on the coupling part, so that there is a comparatively small closed power flow.
  • the retaining nut can be used not only for axial positioning of the cover bearing, but also for removing the forces occurring during actuation of the clutch unit.
  • a screw connection can be easily made during assembly and allows for acting in the axial direction forces a durable support of the actuating forces.
  • the slave cylinder may in particular be hydraulically connected to a master cylinder, which in the case that an actuation request of the clutch unit, for example, for a change of a transmission gear, is detected in the slave cylinder causes an increase in pressure.
  • the slave cylinder may in particular have an annular pressure chamber in which a piston can be displaceably guided in the axial direction.
  • the piston can engage via an actuating bearing on a co-rotating actuator.
  • the slave cylinder and the guide sleeve and the retaining nut have in particular a to a rotational axis of the clutch unit substantially coaxial through-opening, can be passed through the at least one transmission input shaft of the motor vehicle transmission.
  • the retaining nut has a radially inwardly projecting lug which can abut on an axial end face of the guide sleeve in order to limit a maximum possible Aufschraubweg the retaining nut and / or predetermine a defined relative position of the retaining nut to the guide sleeve.
  • a clutch disc of a friction clutch of the clutch unit may be rotatably connected.
  • the external thread of the guide sleeve is provided in particular only in part of the axial extent of the guide sleeve.
  • the external thread is spaced in the axial direction to a region in which an inner ring of the cover bearing is connected via a clearance fit, a transition fit or a press fit with the guide sleeve. Direct contact of the inner ring of the cover bearing with the external thread is thereby avoided.
  • the retaining nut has a in the axial direction of the cover bearing to projecting, preferably annular, holding stop, via which the actuating forces of the slave cylinder can be supported on the cover bearing.
  • the cover bearing and / or the coupling part are positioned in the axial direction between the retaining nut and the slave cylinder.
  • the coupling part mounted on the cover bearing may, in particular, be a clutch cover which at least partially covers a friction clutch of the clutch assembly and on which, in particular, the actuating member may be supported directly or indirectly pivotably.
  • the coupling part may also be a counter-plate of the friction clutch mounted on the cover bearing.
  • the actuating element is provided in the axial direction between the coupling part and the slave cylinder, wherein preferably the actuating element in the unactuated state in axial direction is biased by a spring force.
  • the actuating bearing can be pressed against the actuating element with a preload spring supported on the slave cylinder. An unnecessary axial play, which could for example lead to rattling noises, can be avoided.
  • a flank geometry of the external thread and / or a flank geometry of the retaining nut for a self-reinforcing screw connection are formed.
  • self-reinforcing screw correspondingly high forces can be supported without loosening the retaining nut and / or dissolves from the guide sleeve.
  • the edge pitch of the outer thread of the guide sleeve slightly deviate from the edge pitch of the internal thread of the retaining nut, so that the retaining nut can jam with the guide sleeve when screwed onto the external thread.
  • the guide sleeve is made of an aluminum material.
  • the guide sleeve can be made of a cost-effective material.
  • the guide sleeve is softer compared to a steel material, so that, for example, the retaining nut can cut into the material of the guide sleeve to produce a particularly stable connection.
  • the external thread of the guide sleeve and / or an internal thread of the retaining nut in the screwed state are at least partially plastically deformed. Due to the plastic deformation, a particularly high holding force between the retaining nut and the guide sleeve can be achieved, which enables fatigue-proof transmission of correspondingly high forces.
  • the retaining nut can be screwed onto the guide sleeve with a predefined torque for this purpose.
  • the retaining nut is secured by a securing element for forming a screw lock with the guide sleeve, wherein in particular the securing element is designed as a glued to the retaining nut and the guide sleeve adhesive layer.
  • the adhesive layer can break open after curing at a correspondingly high torque applied to the retaining nut and / or can chip off from the retaining nut and / or from the guide sleeve.
  • the cover bearing is clamped between the retaining nut and the coupling part.
  • the cover bearing can thereby be positioned fixed without play and with a certain clamping force in the axial direction between the retaining nut and the coupling part.
  • the cover bearing can act directly or indirectly on an inner ring of the cover bearing and the coupling part directly or indirectly on an outer ring of the cover bearing.
  • the cover bearing as a rolling bearing, in particular deep groove ball bearings configured.
  • the cover bearing can be configured in particular as a radial bearing, wherein the cover bearing can transmit as rolling bearings and forces in the axial direction. The cover bearing can thereby withstand the operating forces of the slave cylinder to be removed during operation of the clutch assembly without special design measures.
  • the guide sleeve is made in one piece with the slave cylinder.
  • the guide sleeve and the slave cylinder can thereby be made of the same material, in particular a cost aluminum material.
  • the number of components is kept small, whereby the assembly can be made easier and cheaper.
  • the cover bearing has a recess for receiving at least a portion of the retaining nut.
  • the retaining nut can be viewed in the radial direction to a large extent, in particular completely covered by the cover bearing.
  • the axial space requirement can be kept low.
  • the invention further relates to a clutch assembly for coupling a drive shaft of a motor vehicle engine with at least one transmission input shaft of a motor vehicle transmission, with a friction clutch for frictionally pressing a rotatably connected to the transmission input shaft coupling plate between a drive shaft coupled to the counter plate and a relative to the counter plate displaceable pressure plate, in particular as Clutch cover configured directly or indirectly connected to the counter-plate coupling part and a supported on the coupling part operating system, which may be formed and developed as described above, for providing an actuating force pointing in the axial direction for opening and / or closing the friction clutch.
  • a friction clutch for frictionally pressing a rotatably connected to the transmission input shaft coupling plate between a drive shaft coupled to the counter plate and a relative to the counter plate displaceable pressure plate, in particular as Clutch cover configured directly or indirectly connected to the counter-plate coupling part and a supported on the coupling part operating system, which may be formed and developed as described above, for providing an actuating force pointing
  • This in Fig. 1 illustrated clutch assembly 10 has an actuating system 12, by means of which an actuating force can be provided in the axial direction to pivot a designed as a plate spring-like lever spring actuator 14.
  • the actuating element 14 a pressure plate of a friction clutch can be displaced relative to a coupled with a drive shaft of a motor vehicle counter plate to frictionally to press a rotatably connected to a transmission input shaft of a motor vehicle transmission clutch disc.
  • the actuation system 12 has a slave cylinder 16 with an annular pressure chamber 18 and a piston 20 guided in the pressure chamber 18 in the axial direction.
  • the piston 20 acts on the actuating element 14 via an actuating bearing 22 configured as a ball bearing and can pivot the actuating element 14 when it leaves the pressure chamber 18 and / or when it enters the pressure chamber 18.
  • a preload spring 24 is provided, which can compensate for example, an axial bias of the actuating element 14 in the retracted state of the piston 20 at least partially.
  • the actuating system 12 additionally comprises an integral with the slave cylinder 16 guide sleeve 26 which projects in the axial direction of the slave cylinder 16 in the direction of the friction clutch and is passed radially inwardly by a designed as a clutch cover 28 coupling part of the clutch unit 10.
  • the slave cylinder 16 and the guide sleeve 26 are made of a low-cost aluminum material.
  • an external thread 32 is provided, with which a retaining nut 34 is screwed.
  • a cover bearing 36 is positioned between the retaining nut 34 and the clutch cover 28.
  • the retaining nut on an inner ring 38 of the cover bearing 36 engage, while the clutch cover 28 engages over an in cross-section staircase-shaped retaining ring 40 on an outer ring 42 of the cover bearing 36.
  • the retaining ring 40 may be pressed with the outer ring 42 and / or with the clutch cover 28.
  • the inner ring 38 radially inwardly have an annular recess 44 into which the retaining nut 34 is screwed.
  • an axial stop 46 formed by the inner ring 38, against which the retaining nut 34 engages, is correspondingly offset.
  • the axial stop 46 is positioned substantially centrally with respect to a ball 48 contacting the inner ring 38 and the outer ring 42 of the cover bearing 36 designed as a deep groove ball bearing.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
  • Mechanical Operated Clutches (AREA)

Claims (10)

  1. Système d'actionnement pour actionner un module d'embrayage (10) afin de coupler un arbre de commande d'un moteur de véhicule automobile à au moins un arbre d'entrée de boîte de vitesses d'une boîte de vitesses de véhicule automobile, avec
    un cylindre récepteur (16) pour introduire une force d'actionnement,
    une douille de guidage (26) pour supporter le cylindre récepteur (16) et
    un palier de couvercle (36), supporté sur une partie d'embrayage, en particulier sur un couvercle d'embrayage (28), pour l'appui de la partie d'embrayage (28) sur la douille de guidage (26), dans lequel le palier de couvercle (36) est emboîté sur la douille de guidage (26),
    caractérisé en ce que la douille de guidage (26) présente un filet extérieur (32) dans une région d'extrémité (30) orientée à l'opposé du cylindre récepteur (16) et un écrou de retenue (34) est vissé sur le filet extérieur (32), et dans lequel le palier de couvercle (36) est logé de façon imperdable, en particulier sans jeu, en direction axiale entre l'écrou de retenue (34) et la partie d'embrayage.
  2. Système d'actionnement selon la revendication 1, caractérisé en ce qu'une géométrie des flancs du filet extérieur (32) et/ou une géométrie des flancs de l'écrou de retenue (34) est configurée pour un vissage auto-renforçateur.
  3. Système d'actionnement selon une revendication 1 ou 2, caractérisé en ce que la douille de guidage (26) est fabriquée en un matériau à base d'aluminium.
  4. Système d'actionnement selon l'une quelconque des revendications 1 à 3, caractérisé en ce que le filet extérieur (32) de la douille de guidage (26) et/ou un filet intérieur de l'écrou de retenue (34) est au moins partiellement déformé plastiquement à l'état vissé.
  5. Système d'actionnement selon l'une quelconque des revendications 1 à 4, caractérisé en ce que l'écrou de retenue (34) est bloqué au moyen d'un élément de blocage pour la formation d'un blocage vissé avec la douille de guidage (26), dans lequel l'élément de blocage est en particulier réalisé sous la forme d'une couche de colle collée avec l'écrou de retenue (38) et la douille de guidage (26).
  6. Système d'actionnement selon l'une quelconque des revendications 1 à 5, caractérisé en ce que le palier de couvercle (36) est serré entre l'écrou de retenue (34) et la partie d'embrayage.
  7. Système d'actionnement selon l'une quelconque des revendications 1 à 6, caractérisé en ce que le palier de couvercle (36) est formé par un palier à roulement, en particulier par un roulement à billes rainuré.
  8. Système d'actionnement selon l'une quelconque des revendications 1 à 7, caractérisé en ce que la douille de guidage (26) est réalisée d'une seule pièce avec le cylindre récepteur (16).
  9. Système d'actionnement selon l'une quelconque des revendications 1 à 8, caractérisé en ce que le palier de couvercle (36) présente une découpe (44) destinée à recevoir au moins une partie de l'écrou de retenue (38).
  10. Module d'embrayage (10) permettant de coupler un arbre de commande d'un moteur de véhicule automobile à au moins un arbre d'entrée de boîte de vitesses d'une boîte de vitesses de véhicule automobile, avec un embrayage à friction pour le pressage par friction d'un disque d'embrayage pouvant être assemblé de façon calée en rotation à l'arbre d'entrée de boîte de vitesses entre une plaque opposée pouvant être couplée à l'arbre de commande et une plaque de pression déplaçable par rapport à la plaque opposée, une partie d'embrayage configurée en particulier comme couvercle d'embrayage (28) et reliée directement ou indirectement à la plaque opposée et un système d'actionnement (12) selon l'une quelconque des revendications 1 à 9 supporté sur la partie d'embrayage pour la fourniture d'une force d'actionnement orientée en direction axiale pour ouvrir et/ou fermer l'embrayage à friction.
EP15158927.2A 2014-04-11 2015-03-13 Système d'actionnement Active EP2933516B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102014207008 2014-04-11

Publications (3)

Publication Number Publication Date
EP2933516A2 EP2933516A2 (fr) 2015-10-21
EP2933516A3 EP2933516A3 (fr) 2016-05-25
EP2933516B1 true EP2933516B1 (fr) 2019-09-04

Family

ID=52692456

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15158927.2A Active EP2933516B1 (fr) 2014-04-11 2015-03-13 Système d'actionnement

Country Status (2)

Country Link
EP (1) EP2933516B1 (fr)
DE (1) DE102015204549A1 (fr)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3044048A1 (de) * 1980-11-22 1982-07-15 Fichtel & Sachs Ag, 8720 Schweinfurt Hydraulische betaetigung fuer ein gezogene kupplung
FR2851627B1 (fr) * 2003-02-20 2005-12-30 Valeo Embrayages Dispositif de transmission de couple pour vehicule automobile
CN102884334A (zh) * 2010-05-06 2013-01-16 舍弗勒技术股份两合公司 双离合器

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
EP2933516A2 (fr) 2015-10-21
EP2933516A3 (fr) 2016-05-25
DE102015204549A1 (de) 2015-10-15

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